2 layers151 × 114.1 mm
2 layers
Arduino Light Flicker Measure PCB
WolfgangFranke/LightFlickerMeasure10Measures flickering lights, like PWM driven LED-systems, using Arduino Nano.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 42
- Pads
- 124
- Tracks, vias
- 290, 43
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Apr 2019
- Updated
- 23 May 2020
Overview
Arduino Light Flicker Measure PCB is an open-source printed circuit board by WolfgangFranke, from the WolfgangFranke/LightFlickerMeasure repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board with 35 parts on 42 nets, routed with 290 tracks and 43 vias.
It is built around the ATMEGA328P-PU, AD5242BRU and AD823AN, with the BC547 among its other parts. Its parts include 12 capacitors, 11 resistors, 4 ICs, 3 connectors and 2 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AD5242BRU
TSSOP-16TSSOP-16 Analog to Digital Converters (ADC) ROHSAnalog DevicesAnalog To Digital Converters (ADC)
AD823AN
PDIP-8-40℃~+85℃ 16mA 2 25V/us 2pA 2uV/℃ 5.2mA 5pA 76dB 800uV High capacitive load driving Rail-to-rail output PDIP-8 FET Input Amplifiers ROHSAnalog DevicesFET Input Amplifiers
BC547
TO-92Bipolar (BJT)Jiangsu Changjing Electronics Technology (CJ)
README
README.mdLight Flicker Measure
Measures flickering lights, like PWM driven LED-systems, using Arduino.
An old Light Bulb sends 80% constant light and a 20% sine waveform as 100 Hz noise ontop, so no flicker is recognized.
This LED Streetlamp sends a permanent PWM of 264 Hz frequency instead of a steady light! Going for a walk at night, this lamp is really annoying.
Philips Hue Being ceiling light and also the Philips Hue Light Strip+, as well as my Philips Hue RGB light bulbs, run at 1 kHz PWM. That still flickers irritatingly in your eyes when looking around in your appartment. I'm surprised seeing that the Hue Being let's overshoot the light at the begin of a PWM=high, but it may be seen due to the two LEDs providing the CCT.
Talking about LED strips, the Paulmann SimpLED-Strip Set (789.56) dims in the PWM frequency range of 2,5 to 4 kHz. Covered by an opaque plastic housing, this could be considered it as less to no flicker. But if you install the strip in direkt sight, a strong flicker will be recognized when moving head or eyes.
Totally smooth light sent by a Philips Filament Bulb (not dimmable), I really enjoy it.
And how about an old-fashioned Neon Lamp, where we all know it does not give a good light? Yep, it does not give a good light!
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4 |
| 3 | 1,5k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R9, R11 |
| 3 | 100n | Capacitor_THT:C_Rect_L4.0mm_W2.5mm_P2.50mm | C2, C9, C11 |
| 2 | 100n | Capacitor_THT:C_Rect_L9.0mm_W2.5mm_P7.50mm_MKT | C7, C10 |
| 2 | 100n | Capacitor_THT:C_Rect_L11.0mm_W2.8mm_P10.00mm_MKT | C1, C3 |
| 2 | 22p | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C4, C5 |
| 2 | BC547 | Package_TO_SOT_THT:TO-92_HandSolder | Q1, Q2 |
| 1 | 1000µ | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C12 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
| 1 | 100n | Capacitor_THT:C_Rect_L7.0mm_W2.0mm_P5.00mm | C8 |
| 1 | 120k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 12p | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C6 |
| 1 | 1M | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
| 1 | AD5242 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | AD823A | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | ATmega328P-PU | Package_DIP:DIP-28_W7.62mm | U1 |
| 1 | Display | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | U4 |
| 1 | Ds | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
| 1 | FTDI | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | LED | LED_THT:LED_D3.0mm | D5 |
| 1 | PWR(5V) | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Q | Crystal:Crystal_HC49-U_Vertical | 16MHz1 |
| 1 | TestPoint | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP1 |
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Questions
What parts does the Arduino Light Flicker Measure PCB use?
35 parts, built around the ATMEGA328P-PU, AD5242BRU, AD823AN and BC547. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Arduino Light Flicker Measure PCB KiCad files?
From the WolfgangFranke/LightFlickerMeasure repository on GitHub, at the commit this page was made from: the board is KiCAD-Schematic+Board/Arduino_Light_Flicker_Measure_PCB.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arduino Light Flicker Measure PCB design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).